In females, the ovaries produce most of the testosterone. Levels are most often checked to evaluate signs of higher testosterone levels:

Decreased breast size

Excess hair growth

Increased size of the clitoris

Irregular or absent menstrual periods

Male-pattern baldness or hair thinning

Normal Results

Male: 300 -1,000 ng/dL

Female: 15 - 70 ng/dL

Note: ng/dL = nanograms per deciliter

The examples above are common measurements for results for these tests. Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different specimens.Talk to your doctor about the meaning of your specific test results.